[%c_arrow d6a3;keyPressed;none;from;d6;opacity;0.8;to;a3;persistent;false] Preparing to exchange bishops with Ba3.
16. c1g5 The queen clears the way for the rook to occupy the c-file, but as the game continues, it will be poorly-placed on the kingside. 16... d7f8 The knight will feel comfortable on e6. 17. f1c1  17... f8e6  18. g5h4 